diff --git a/package-lock.json b/package-lock.json
index ca35a950c..1523ac279 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17987,6 +17987,7 @@
       "dependencies": {
         "@anthropic-ai/sdk": "^0.36.1",
         "@google/genai": "1.30.0",
+        "@iarna/toml": "^2.2.5",
         "@modelcontextprotocol/sdk": "^1.25.1",
         "@opentelemetry/api": "^1.9.0",
         "@opentelemetry/exporter-logs-otlp-grpc": "^0.203.0",
diff --git a/packages/cli/src/commands/extensions/list.test.ts b/packages/cli/src/commands/extensions/list.test.ts
index 01e41941c..8c7a24951 100644
--- a/packages/cli/src/commands/extensions/list.test.ts
+++ b/packages/cli/src/commands/extensions/list.test.ts
@@ -23,6 +23,7 @@ vi.mock('./utils.js', () => ({
     getLoadedExtensions: mockGetLoadedExtensions,
     toOutputString: mockToOutputString,
   }),
+  extensionToOutputString: mockToOutputString,
 }));
 
 vi.mock('../../utils/errors.js', () => ({
diff --git a/packages/cli/src/commands/extensions/list.ts b/packages/cli/src/commands/extensions/list.ts
index 9f8a3a7f6..6f5653be3 100644
--- a/packages/cli/src/commands/extensions/list.ts
+++ b/packages/cli/src/commands/extensions/list.ts
@@ -6,7 +6,7 @@
 
 import type { CommandModule } from 'yargs';
 import { getErrorMessage } from '../../utils/errors.js';
-import { getExtensionManager } from './utils.js';
+import { extensionToOutputString, getExtensionManager } from './utils.js';
 import { t } from '../../i18n/index.js';
 
 export async function handleList() {
@@ -21,7 +21,7 @@ export async function handleList() {
     console.log(
       extensions
         .map((extension, _): string =>
-          extensionManager.toOutputString(extension, process.cwd()),
+          extensionToOutputString(extension, extensionManager, process.cwd()),
         )
         .join('\n\n'),
     );
diff --git a/packages/cli/src/commands/extensions/utils.ts b/packages/cli/src/commands/extensions/utils.ts
index 49e5f15e5..b7605f32c 100644
--- a/packages/cli/src/commands/extensions/utils.ts
+++ b/packages/cli/src/commands/extensions/utils.ts
@@ -4,13 +4,15 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import { ExtensionManager } from '@qwen-code/qwen-code-core';
+import { ExtensionManager, type Extension } from '@qwen-code/qwen-code-core';
 import { loadSettings } from '../../config/settings.js';
 import {
   requestConsentOrFail,
   requestConsentNonInteractive,
 } from './consent.js';
 import { isWorkspaceTrusted } from '../../config/trustedFolders.js';
+import * as os from 'node:os';
+import chalk from 'chalk';
 
 export async function getExtensionManager(): Promise<ExtensionManager> {
   const workspaceDir = process.cwd();
@@ -25,3 +27,53 @@ export async function getExtensionManager(): Promise<ExtensionManager> {
   await extensionManager.refreshCache();
   return extensionManager;
 }
+
+export function extensionToOutputString(
+  extension: Extension,
+  extensionManager: ExtensionManager,
+  workspaceDir: string,
+): string {
+  const cwd = workspaceDir;
+  const userEnabled = extensionManager.isEnabled(
+    extension.config.name,
+    os.homedir(),
+  );
+  const workspaceEnabled = extensionManager.isEnabled(
+    extension.config.name,
+    cwd,
+  );
+
+  const status = workspaceEnabled ? chalk.green('✓') : chalk.red('✗');
+  let output = `${status} ${extension.config.name} (${extension.config.version})`;
+  output += `\n Path: ${extension.path}`;
+  if (extension.installMetadata) {
+    output += `\n Source: ${extension.installMetadata.source} (Type: ${extension.installMetadata.type})`;
+    if (extension.installMetadata.ref) {
+      output += `\n Ref: ${extension.installMetadata.ref}`;
+    }
+    if (extension.installMetadata.releaseTag) {
+      output += `\n Release tag: ${extension.installMetadata.releaseTag}`;
+    }
+  }
+  output += `\n Enabled (User): ${userEnabled}`;
+  output += `\n Enabled (Workspace): ${workspaceEnabled}`;
+  if (extension.contextFiles.length > 0) {
+    output += `\n Context files:`;
+    extension.contextFiles.forEach((contextFile) => {
+      output += `\n  ${contextFile}`;
+    });
+  }
+  if (extension.commands && extension.commands.length > 0) {
+    output += `\n Commands:`;
+    extension.commands.forEach((command) => {
+      output += `\n  /${command}`;
+    });
+  }
+  if (extension.config.mcpServers) {
+    output += `\n MCP servers:`;
+    Object.keys(extension.config.mcpServers).forEach((key) => {
+      output += `\n  ${key}`;
+    });
+  }
+  return output;
+}
diff --git a/packages/core/package.json b/packages/core/package.json
index 1b13743ae..d05f3258c 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -37,6 +37,7 @@
     "@opentelemetry/sdk-node": "^0.203.0",
     "@types/html-to-text": "^9.0.4",
     "@xterm/headless": "5.5.0",
+    "@iarna/toml": "^2.2.5",
     "ajv": "^8.17.1",
     "ajv-formats": "^3.0.0",
     "async-mutex": "^0.5.0",
diff --git a/packages/core/src/extension/extensionManager.ts b/packages/core/src/extension/extensionManager.ts
index d41207ae2..07522f300 100644
--- a/packages/core/src/extension/extensionManager.ts
+++ b/packages/core/src/extension/extensionManager.ts
@@ -36,7 +36,6 @@ import {
 } from './github.js';
 import type { LoadExtensionContext } from './variableSchema.js';
 import { Override, type AllExtensionsEnablementConfig } from './override.js';
-import chalk from 'chalk';
 import { parseMarketplaceSource } from './marketplace.js';
 import {
   isGeminiExtensionConfig,
@@ -1056,49 +1055,6 @@ export class ExtensionManager {
     );
   }
 
-  /**
-   * Converts an extension to output string.
-   */
-  toOutputString(extension: Extension, workspaceDir?: string): string {
-    const cwd = workspaceDir ?? this.workspaceDir;
-    const userEnabled = this.isEnabled(extension.config.name, os.homedir());
-    const workspaceEnabled = this.isEnabled(extension.config.name, cwd);
-
-    const status = workspaceEnabled ? chalk.green('✓') : chalk.red('✗');
-    let output = `${status} ${extension.config.name} (${extension.config.version})`;
-    output += `\n Path: ${extension.path}`;
-    if (extension.installMetadata) {
-      output += `\n Source: ${extension.installMetadata.source} (Type: ${extension.installMetadata.type})`;
-      if (extension.installMetadata.ref) {
-        output += `\n Ref: ${extension.installMetadata.ref}`;
-      }
-      if (extension.installMetadata.releaseTag) {
-        output += `\n Release tag: ${extension.installMetadata.releaseTag}`;
-      }
-    }
-    output += `\n Enabled (User): ${userEnabled}`;
-    output += `\n Enabled (Workspace): ${workspaceEnabled}`;
-    if (extension.contextFiles.length > 0) {
-      output += `\n Context files:`;
-      extension.contextFiles.forEach((contextFile) => {
-        output += `\n  ${contextFile}`;
-      });
-    }
-    if (extension.commands && extension.commands.length > 0) {
-      output += `\n Commands:`;
-      extension.commands.forEach((command) => {
-        output += `\n  /${command}`;
-      });
-    }
-    if (extension.config.mcpServers) {
-      output += `\n MCP servers:`;
-      Object.keys(extension.config.mcpServers).forEach((key) => {
-        output += `\n  ${key}`;
-      });
-    }
-    return output;
-  }
-
   async performWorkspaceExtensionMigration(
     extensions: Extension[],
     requestConsent: (options?: ExtensionRequestOptions) => Promise<void>,